Original versions of Crusader were locked to 4:3 resolutions (800x600, 1024x768). Version 1.3 natively supports 1080p, 1440p, and even 4K. No more black bars or stretched sprites.
If you own the original 2002 CD:
: Minor tweaks to how computer opponents manage their economies. Stronghold Crusader 1.3 Download Full Version
The easiest way to get the is via Steam. Original versions of Crusader were locked to 4:3
: You cannot typically download the "full version" of the game for free from official sites. The most reliable way to get a clean, updated v1.3 (or later) install is through digital storefronts like 1024x768). Version 1.3 natively supports 1080p
: The most common way to play. It includes the "HD" upgrade, supporting high resolutions and modern hardware.